... glutamic acid through glutamate decarboxylase, GABA, a kind of natural non-protein amino acid, is an important neurotransmitter of the ... 30≥40≥50≥60≥70≥80 Product Property: pale yellow, Powder, Water-solubleDosage: The amount suggested by the experts is ... beverages and milk products. 3. as the natural ingredients used in coffee, chocolate, apple juice, cocoa, yogurt, milk sugar, butter, toast, bread ...